Jules duplain



(No Model) J. DUPLAIN.

STEM WINDING AND SETTING WATCH. 7 No. 388,186. Patented Aug. 21, 1888.

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UNITED STATES PATENT OFFICE.

JULES DUPLAIN, OF MONTREAL, QUEBEC, CANADA.

STEM WINDING AND SETTING WATCH.

SPECIFICATION forming part of Letters Patent No. 388,186, dated August21, 1888.

Application filed June 12, 1888. Serial No. 276,815. (No model.)

. ners,it will cause the stem attached thereto to, I actuate twodifferent mechanisms-one to set the hands with and the other to wind upthe mainspring with-as shown in Letters Patent No. 192,425, dated June26, 1877, and No. 312,856, dated February 24, 1885, to G. Hunter, andNo. 287,001, dated October 23,1883, to C. K. Colby. By my invention thesaid crown and stem may be actuated in a third manner in addition to thetwo others, whereby the spring which holds the casing of the watch .2 5closed will be disengaged therefrom and allow the watch-casing to springopen by the spring arranged for that purpose.

In the drawings hereunto annexed similar letters of reference indicatelike parts.

Figure 1 is a plan of a watch-casing and pendent set embodying myinvention. Fig. 2 is ahorizontal section of the watch-casing,&c., shownin Fig. 1, taken at the level oflinew in Fig. 3. Fig. 3 is a verticalsection on line at, Fig. 1. Fig. etis apart section of the hinge,showing in connection therewith, the end of the spring 2' by which thewatch-casing is caused to open, the section being taken at line 3 Fig 1.Fig. 5 is a side elevation of the nipple e and latches f attachedthereto detached. Fig. 6 is an end elevation of the papts shown in Fig.5. Fig. 7 is a diagram showing two of the positions of the operativeparts.

a represents the ccnterband, b the back, and c the front, of thewatch-casing. disthe tubular stem or pendant, all of ordinaryconstruction and as heretofore in use.

e is the nipple, screwed, as shown, into the pendant d, to which areattached the latch- 50 springsf. As shown, they are four in number,forming atubular configuration, and are substantially the same asheretofore in use, although somewhat modified in shape and position. Thelatch-springs f are attached to the nipple by spinning the end of thenipple over 5 the foot of the tube out of which the springs or latches fare formed.

9 is the crown.

h is the hinge.

'i is the spring, the end of which is arranged to actuate the sides a ofthe casing and causeit to fly open when released by the catch k.

The stem A in this case consists of parts as follows: squareend l,toactuate thehand-setting and windingmeehanismsinasimilarmanner as setforth in the hereinbefore-mentioned Letters Patent, collar m, inclinedand enlarged part a, neck 0, body 10, and screwed'end q. The screwed endq is made of suitable size to enter freelyin between the spring-latchesf, and is 73 threaded to fit a screw-threaded hole in the crown 9,whereby it is attached to the crown. Thetapered body 1) enables the stemA to wedge thespring-latches f apart,being entered from the'inside ofthe watch'casing to the po- 75 sition shown in Figs. 2 and 3, the spring8 being removed for that purpose and putin place after the stem Aislocated. The neck 0 is of suitable size to till the space t between thelatches. (See Fig. 6.) The enlarged part 91. causes the spring-latches fto hold the stem A by the neck 0, or, if the crown is pulled outward, toyield and allow them to pass over the enlarged part n and grip close upto the collar n, as shown in the upper part of Fig. 7.

With the parts in the position shown in Fig. 3, the stem A is in theproper position for causing the end I to wind up the mainspring, andwhen moved to the position shown in the upper part of Fig. 7 His in theposition for c setting the hands by, and by pushing upon the crown 9, soas to cause it to enter more Over the end of the pendant (1 than shownin Fig. 3, the stem A is moved from that position to the position shownin the lower part of Fig. 7, in 95 doing which the collar m presses theend of the spring 8 from the position shown in solid lines in Fig. 3 tothat shown by dotted lines in that figure, or to the position shown inthe lower part of'Fig. 7, thus disengaging the catch it from its hold onthe cover a and allowing the spring t to cause it to fly open.

It will be observed that when the stem A is in the position shown inFig. 3 it is held in that position from free motion (longitudinally) inone direction by the spring 8, which has an opening, 0, in it for theend l to pass freely through, and from free motion in the otherdirection by the ends of the spring-latches resting at the bottom of oneof the inclines of the enlarged part it. When the stem A has been forcedby pressing on the crown g from the position shown in Fig. 3 to thatshown in the lower part of Fig. 7, as soon as the force is removed fromthe crown g the spring .9 will return the stem A to the position shownin Fig. 3.

I do not confine my invention to the precise proportions andconfigurations of parts shown,

as these may be considerably changed without departing from the gist ofmy invention.

Vt hat I claim is as follows:

The combination, in a watch arranged for stem-winding and hand-settingby the crown, of a stem, A, having a collar, m, said stein beingattached to the crown, with crown g and with spring 8, having catch is,and opening '0, through which the endl of the stem A passes, the wholesubstantially as described.

JULES DUPLAIN.

Witnesses:

J. E. WARNER, CHARLES G. O. SIMPsoN.

